Vat dyes.



sra'rns ra 'rrzu'r er m OSCAR IBALLY, 01E MANNHEIM, GERMANY, ASSIGNOR TO BADISCHE ANILIN & SODA FABRIK, OF LUDWIGSHAFEN-ON-THE RHINE, GERMANY, A CORPORATION.

var urns.

No Drawing.

To all whom it may concern..-

Be it known that 1, Oscar BALLY, citizen of the Swiss Republic, residing at Mann heim, Germany, have invented new and useful Improvements in Vat Dyes, of which the following is a specification.

as described in the specifications of Letters Patent Nos. 809,892, 818,992, 906,367 and 1,003,268, and include both those compounds which are regarded as possessing the dibenzanthrone groupins t and those which are regarded as possessing the isodibenzanthrone grouping th /K) The vat coloring nuitters thus obtained dyecotton generally shades which are. dif

ferent from those produced by the original compounds into which the said radicals have not been introduced. 4

The following examples will serve to illustrate further how my invention can be car- Specification of Letters Patent. Patented Feb m was, Application aie'a August 14,1913. serial No. 784,811.

ried into practical efi'ect, but the invention is not confined to these examples. Theparts are by Weight:

. Example 1: Heat together in an autoclave, for about 6 hours, at 150 (1,1 part of aminodibenzanthrone (obtainable as described in Example 3 of Patent No. 796,393) and 5 parts of ethyl iodid. Then distil oil" the excess of ethyl iqdid, dissolve the residue in concentrated sulfuric acid, precipitate by pouring the solution into Water, filter oil" the precipitate and make it into a paste.

Example 2: Boil together 1 part of aminodibenzanthrone and 10 parts of benzoyl chlorid, until the evolution of hydrochloric acid ceases. oil? the reaction product, Wash it with alcohol and dry it.

-Example 3: Dissolve 3 parts of amino When the mass is cold, filter.

isodibenzanthrone (obtainable as described in Patent No. 1,063,000) in 100 parts of 97% sulfuric acid, and commencing at about 30 C. add slowly, while shaking, 20 parts of 410% formaldehyde solution. The temperature rises to about from 100 to 110 C. and the solution, which is at first reen, becomes blue. Complete the reaction y heating for about another hour at from to 100 C. Pour the melt into Water, filter ofi the product, washit and make it into a paste.

The following table gives some of the properties of a few- 6f the products obtainable according to this invention:

A m l n o dibenzenthrone+ Dark brown Violet blue Bordeeu x ethyl iodid. red.

L A m l n o dihcnzanthrone+ Dark brown Bluc-vio- Vloletred.

henzyl chlorid. 4 let.

A wine (IlbcnzantlironB-lal i 0-1 2 t Dull blue- Blue via benzoyl chlorld. black. violet. let.

Amino Hispfiibenzanthronei Dari; bronze Bluegreen Violet.

Amino-isodibenzantlirone+ Dmhfinmnze Blue-green Violet.

benzyl chlorld.

Amino-lsodibenzanthrone+ Dark bran ae Blue-green violet;

formaldehyde.

In a similar manner, other radicals can be introduced into the aforesaid amino compounds. 3 w

Now what I claim is 1. The process of producing vat dyes ,of the anthraquinone series by introducing an organic radical into an ammo group of an organic radical attached to the amino group,

which new dyes consist,when dry, oi dark powders, yield f'rom blue-green to blue-violet soiutions in concentrated sulfuric acid,

and dye cotton from a hydrosul fite vat from Bordeaux red to blue-violet shades.

4. The new vat dye which is ethyl-aminodibenzanthrone and consists, when dry, of a dark brown powder, which yields a v1oletblue solution in concentrated sultmic acid,

and which dyes cotton from a vat Bordeaux red shades.

In testimony whereof I have hereunto set my hand in the presence of two subscribing witnesses.

OSCAR BALLY,

Witnesses:

. JOSEPH PFEIFFER,

ERNEST F. EI-IRHARDT. 

